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floating point support fixes

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This commit is contained in:
Blaise Tine
2020-07-27 16:01:56 -04:00
parent ff12393998
commit e0a9089647
23 changed files with 408 additions and 330 deletions
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40
hw/rtl/VX_issue.v
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@@ -8,7 +8,7 @@ module VX_issue #(
VX_decode_if decode_if,
VX_wb_if writeback_if,
VX_commit_is_if commit_is_if,
VX_cmt_to_issue_if cmt_to_issue_if,
VX_alu_req_if alu_req_if,
VX_lsu_req_if lsu_req_if,
@@ -17,11 +17,19 @@ module VX_issue #(
VX_fpu_req_if fpu_req_if,
VX_gpu_req_if gpu_req_if
);
VX_gpr_data_if gpr_data_if();
wire schedule_delay;
wire gpr_delay;
VX_gpr_read_if gpr_read_if();
assign gpr_read_if.valid = decode_if.valid;
assign gpr_read_if.warp_num = decode_if.warp_num;
assign gpr_read_if.rs1 = decode_if.rs1;
assign gpr_read_if.rs2 = decode_if.rs2;
assign gpr_read_if.rs3 = decode_if.rs3;
assign gpr_read_if.rs1_is_fp = decode_if.rs1_is_fp;
assign gpr_read_if.rs2_is_fp = decode_if.rs2_is_fp;
assign gpr_read_if.use_rs3 = decode_if.use_rs3;
wire [`ISTAG_BITS-1:0] issue_tag, issue_tmp_tag;
wire gpr_busy = ~gpr_read_if.ready;
wire alu_busy = ~alu_req_if.ready;
wire lsu_busy = ~lsu_req_if.ready;
wire csr_busy = ~csr_req_if.ready;
@@ -36,16 +44,15 @@ module VX_issue #(
.reset (reset),
.decode_if (decode_if),
.writeback_if (writeback_if),
.commit_is_if (commit_is_if),
.gpr_busy (gpr_delay),
.cmt_to_issue_if(cmt_to_issue_if),
.gpr_busy (gpr_busy),
.alu_busy (alu_busy),
.lsu_busy (lsu_busy),
.csr_busy (csr_busy),
.mul_busy (mul_busy),
.fpu_busy (fpu_busy),
.gpu_busy (gpu_busy),
.issue_tag (issue_tag),
.schedule_delay (schedule_delay),
.issue_tag (issue_tag),
`UNUSED_PIN (is_empty)
);
@@ -53,19 +60,16 @@ module VX_issue #(
.CORE_ID(CORE_ID)
) gpr_stage (
.clk (clk),
.reset (reset),
.decode_if (decode_if),
.reset (reset),
.writeback_if (writeback_if),
.gpr_data_if (gpr_data_if),
.schedule_delay (schedule_delay),
.gpr_delay (gpr_delay)
.gpr_read_if (gpr_read_if)
);
VX_decode_if decode_tmp_if();
VX_gpr_data_if gpr_data_tmp_if();
VX_gpr_read_if gpr_data_tmp_if();
wire stall = ~alu_req_if.ready || schedule_delay;
wire flush = alu_req_if.ready && schedule_delay;
wire stall = ~alu_req_if.ready || ~decode_if.ready;
wire flush = alu_req_if.ready && ~decode_if.ready;
VX_generic_register #(
.N(1 + `ISTAG_BITS + `NW_BITS + `NUM_THREADS + 32 + 32 + `NR_BITS + `NR_BITS + `NR_BITS + 32 + 1 + 1 + 1 + 1 + `EX_BITS + `OP_BITS + 1 + `NR_BITS + 1 + 1 + 1 + `FRM_BITS + (`NUM_THREADS * 32) + (`NUM_THREADS * 32) + (`NUM_THREADS * 32))
@@ -74,13 +78,13 @@ module VX_issue #(
.reset (reset),
.stall (stall),
.flush (flush),
.in ({decode_if.valid, issue_tag, decode_if.warp_num, decode_if.thread_mask, decode_if.curr_PC, decode_if.next_PC, decode_if.rd, decode_if.rs1, decode_if.rs2, decode_if.imm, decode_if.rs1_is_PC, decode_if.rs2_is_imm, decode_if.use_rs1, decode_if.use_rs2, decode_if.ex_type, decode_if.ex_op, decode_if.wb, decode_if.rs3, decode_if.use_rs3, decode_if.rs1_is_fp, decode_if.rs2_is_fp, decode_if.frm, gpr_data_if.rs1_data, gpr_data_if.rs2_data, gpr_data_if.rs3_data}),
.in ({decode_if.valid, issue_tag, decode_if.warp_num, decode_if.thread_mask, decode_if.curr_PC, decode_if.next_PC, decode_if.rd, decode_if.rs1, decode_if.rs2, decode_if.imm, decode_if.rs1_is_PC, decode_if.rs2_is_imm, decode_if.use_rs1, decode_if.use_rs2, decode_if.ex_type, decode_if.ex_op, decode_if.wb, decode_if.rs3, decode_if.use_rs3, decode_if.rs1_is_fp, decode_if.rs2_is_fp, decode_if.frm, gpr_read_if.rs1_data, gpr_read_if.rs2_data, gpr_read_if.rs3_data}),
.out ({decode_tmp_if.valid, issue_tmp_tag, decode_tmp_if.warp_num, decode_tmp_if.thread_mask, decode_tmp_if.curr_PC, decode_tmp_if.next_PC, decode_tmp_if.rd, decode_tmp_if.rs1, decode_tmp_if.rs2, decode_tmp_if.imm, decode_tmp_if.rs1_is_PC, decode_tmp_if.rs2_is_imm, decode_tmp_if.use_rs1, decode_tmp_if.use_rs2, decode_tmp_if.ex_type, decode_tmp_if.ex_op, decode_tmp_if.wb, decode_tmp_if.rs3, decode_tmp_if.use_rs3, decode_tmp_if.rs1_is_fp, decode_tmp_if.rs2_is_fp, decode_tmp_if.frm, gpr_data_tmp_if.rs1_data, gpr_data_tmp_if.rs2_data, gpr_data_tmp_if.rs3_data})
);
VX_issue_demux issue_demux (
.decode_if (decode_tmp_if),
.gpr_data_if (gpr_data_tmp_if),
.gpr_read_if (gpr_data_tmp_if),
.issue_tag (issue_tmp_tag),
.alu_req_if (alu_req_if),
.lsu_req_if (lsu_req_if),